Stripper for punches.



UNlTED STATES PATENT OFFICE.

FREDERIO A. PEESO, OF PHILADELPHIA, PENNSYLVANIA.

STRIPPER FOR PU NCHES.

SPECIFICATION forming part of Letters Patent N 0. 660,334, dated October 23, 1900.

To all whmn it 77bLY/Z/ concern.-

Be it known that I, FREDERIO A. PEESO, a citizen of the United States, residing at Philadelphia, in the county of Philadelphia and State of Pennsylvania, have invented certain new and useful Improvements in Strippers for Punches; and I do hereby declare the following to be a full, clear, and exact description of the invent-ion, such as will enable others skilled in the art to which it appertains to make and use the same.

My invention relates to strippers for hand plate-punches; and my object is to provide a stripper that can be readily secured to and detached from a punch.

The invention will first be described in detail and then set forth in the claims at the end of the specification.

In the accompanying drawings,which illustrate suitable embodiments of my invention, Figure 1 is a view of a hand plate-punch of well-known construction with my improved detachable stripper secured thereto, the same being shown in side elevation. Fig. 2 is another view of said punch turned at a right angle relatively to Fig. 1 and showing the under side of said stripper. Fig. 3 is a view similar to Fig. 1, but with the handles of the punch omitted and with the jaws and stripper in section. Fig. 4 is a view in side elevation of the stripper detached and showing a slight modification. Fig. 5 is an end view of the same looking toward its front, end. Fig. 6 is an end view thereoflooking atits opposite or rear end. Fig. 7isaplan view ofthe under side of the stripper. Fig. 8 is a top or plan View of the stripper, and Fig. 9 is a similar View with the strip per-ton gue broken away to more clearly show the upper surface of the base portion of the stripper.

Punch-strippers as heretofore made consist of a bifurcated tongue or plate either formed integral with the punch or connected to one jaw thereof by means of screws or other similar attachment. The objection to all such strippersis that the punches to which they are to be attached must be provided with some special fitting. My improved stripper is free from this objection, as no fitting of the punch whatever is necessary in order to secure the stripper thereto. On the contrary,

Application filed March 9, 1900. derial No. 7,970. (No model.)

my stripper may be secured upon punches already in use without altering them in any wav.

The preferred exam ple of myimprovement, as shown in the drawings, consists of'a strip per A, having a base portion B, a curved arm 0, which is extended to form a bifurcated spring-tongue or stripper proper, D, and an arm or brace E. The base 13 of the attachment is formed Withan opening 17, through which passes the jaw Fof the punch G, to which jaw the attachment is secured, the up-- per surface of the base resting against the outer or under surface of said jaw. The front and rear ends of the openingb are preferably beveled and curved, as shown, in order that the opening may closely fit the jaw F. The arm or brace E of the attachment, which is located between the stripper-tongue -D and base B in this instance,is formed of the metal which is cut away from the bifurcated tongue D and on its outer or free extremity is provided with a notch 01, adapted to partly embrace or engage the punch-jaw near its outer end when the attachment is in place. The brace is preferably a spring-arm, and, while adapted to securely hold the attachment in place, also permits the same to be readily detached from the punch. The base B of the strippershould be provided with a small opening b, which registers with the opening fin the female jaw F of the punch to which the stripper is attached, the object of this opening being to provide for the escape of the punchings.

The stripper is applied to the punch by sim ply passing the opening I? over the jaw F and springing the brace-arm E into engagement with said jaw F, as shown in Figs. 1 and 2. By a simple reversal of these movements the stripper may be readily detached. It will thus be seen that Ihave provided a stripper capable of quick, easy, and simple attachment and removal from hand plate-punches without the necessity of altering the punch or providing it with any special means of securing the stripper.

The punch represented in the drawings and to which my improved detachable stripper is shown as applied is an ordinary hand platepunch now in common use, particularly by dentists. My invention herein shown and described was designed with special reference to this particular style of hand-punch,to which it may be attached and detached, as above described, withoutin any manner alteringthe ment shown may be altered in various ways while still retaining the essential and novel features of my inventionto wit, an attachment consisting of a base having an opening through which the jaw of a punch may pass, means, such as the brace-arm E, for engaging said jaw for holding the attachment in place, and a stripper-tongue. In other words, not only can the general design of the attachment be varied, but the particular form of base, as well as the particular brace-arm and tripper-tongue, may be altered as desired to adapt the attachment for use with any form of punch In the stripper shown in Fig. 4 the bracearm is omitted and in lieu thereof a small setscrew e is provided for engaging the jaw F of the punch for the purpose of holding the attachment in place.

Detachable punch-strippers are of course old and well known, and such I do notbroadly claim as my invention; but

What I claim isl. A detachable stripper for hand platepunc'hes consisting of a base having an opening through which the jaw of a punch may 1 pass, means other than said base for engaging said jaw for detarhably holding the attachmentin place,and astripper-tongue, substantially as and for the purpose set forth.

2. A detachable stripper for hand platepunches, consisting of the base having an opening through which the jaw of a punch may pass, a brace-arm for engaging said punch-jaw, and a stripper-tongue, substantially as and for the purpose set forth.

3. A detachable stripper for hand platepunches consisting of a base, a curved arm connected to said base and extended to form a bifurcated stripper-tongue, and a brace- I11 testimony whereof I atfix my signature in presence of two witnesses.

FREDERIC A. PEESO.

Witnesses:

B. FRANK STOUT, ED. 0. STOUT. 

